Radiation-induced cross-linking:a novel avenue to permanent 3D modification of polymeric membranes

作     者：Yu Gu Bo-Wu Zhang Zhen Guo Ji-Hao Li Ming Yu Lin-Fan Li Jing-Ye Li Yu Gu;Bo-Wu Zhang;Zhen Guo;Ji-Hao Li;Ming Yu;Lin-Fan Li;Jing-Ye Li

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional MaterialsCollege of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2021年第32卷第7期

页      面：31-45页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.11875313 12075153 and 11575277) 

主　　题：Ultrafiltration membrane Antifouling 3D modification Gamma-ray Cross-linking 

摘      要：Membrane fouling is always the biggest problem in the practice of membrane separation technologies,which strongly impacts their applicability,separation efficiency,cost effectiveness,and service ***,a simple but effective 3D modification approach was designed for permanently functionalizing polymeric membranes by directly cross-linking polyvinyl alcohol(PVA)under gamma-ray irradiation at room temperature without any *** the modification,a PVA layer was constructed on the membrane surface and the pore inner surface of polyvinylidene fluoride(PVDF)*** endowed them with good hydrophilicity,low adsorption of protein model foulants,and easy recoverability *** addition,the pore size and distribution were customized by controlling the PVA concentration,which enhanced the rejection ability of the resultant membranes and converted them from microfiltration to *** crosslinked PVA layer was equipped with the resultant membranes with good resistance to chemical cleaning by acidic,alkaline,and oxidative reagents,which could greatly prolong the membrane service ***,this approach was demonstrated as a universal method to modify PVDF membranes with other hydrophilic macromolecular modifiers,including polyethylene glycol,sodium alginate,and polyvinyl *** modification of the membranes effectively endowed them with good hydrophilicity and antifouling properties,as expected.